Now you choose US M- Leash Length: 47 inch | Leash Diameter: 0.59 inch | Adjustable Neck: 11.8-15.7 inch Nylon outer and cotton core. Stainless steel extension allows the collar to adjust itself in response to your dog's movements and provides a secure fit that won't choke or pull on fur with sudden movement to ensure your pup's comfort. Feature : Steel chain dog collars, training P dog leash set . smooth&rounded edges,skin-friendly and safety to operate. Hand constructed out of 8 braided nylon threads, our dog leash and collar are strong enough to meet the standards used by canine search and rescue teams, it can stand up to the hardest tugs and pulls that your pooch can master. Package includes:1PC X Pet leash for medium and large dogs such as Tibetan Mastiff,Huskies,Satsuma,Golden Retriever, Labrador. Standard shipping takes 7-14 days, Expedited 4-6 days, thank you.